Displaying 1 result from an estimated 1 matches for "ssgrowth_function".
2004 May 14
2
NLME model question
...sing some 24 growth curves of some cells , and i wanted to say
that there are significant differences between the curves in two parameters
that describe the pattern of growth. these parameters are from a logistic
(r & k) .
i have attempted to construct a self starting routine for nlme ie:
SSGrowth_function(x, r, k)
{
.expr2 <- (k - 100000)/100000
.expr5 <- exp(((r * -1) * x))
.expr7 <- 1 + (.expr2 * .expr5)
.expr13 <- .expr7^2
.value <- k/.expr7
.actualArgs <- match.call()[c("r", "k")]
if(all(unlist(l...